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1. nervous
2. fluently
3. interesting
4. careless
5. heavy
6.excitingly
7. good
8. careful
9. strict
10.clear
1. I like taking part in sports.
2. There was a walking competition for school children last year.
3. The regular activity is a 5km walk to the beach on Sunday morning.
4. You should listen to the pool lifeguards .
5. They take a walk instead of riding their bicycles.
6. Are you aware of the time?
7. We carried out a survey for teenagers in the USA.
8. Children should always swim with an adult.
1.at-on
2. before
3. at
4. in
5. in-in
6. before
7. in
8. for
9. in-in
10. the left of-on
5.
1. How did they go to Ha noi ?
2. When will she bring you some more stamps ?
3. Why don't they like that film ?
4. How long is she going to stay with her grandparents ?
5. Where did you go last night ?
nhiều mà bạn còn chụp ngang nx , khó nhìn lắm , bạn đánh ra ik 
Mình viết luôn đáp án nha:
(1)important (7)teeth
(2)food (8)toothache
(3)bad (9)toothpaste
(4)happens (10)after
(5)ill (11)for
(6)fill (12)harmful
chúc bạn học tốt!